The birthplace and spiritual home of Islam, Saudi Arabia is rich in significance. The Middle Eastern gem isn't only known for its honey-hued deserts and closeness to the Red Sea. It's home to the two holiest cities in Islam, Mecca and Medina – so you're not short of magnificent holy sites to visit. We're talking everything from immense mosques, such as the Al Masjid An Nabawi of Medina and Masjid al-Haram, the Great Mosque of Mecca, to the battle-commemorating Mount Uhud mountain. And beyond that you'll find the carved temples of Madain Saleh, known as the second Petra. Muslim pilgrims regularly visit these holy sites, not just for their religious obligation, but their historic significance – and you can, too.